Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

I love the PRH2 it's pretty good and I carry it almost everywhere at work. 1/2" Unibit on my 1/4" impact lets you take quick in-duct readings. You can get by with 3/8" on the hole but I prefer the 1/2" lets it set a little better in the duct. It's a little sluggish on readings but fast enough for me. And ya can't beat the price tag on them.

First one lasted About a week. Got it replaced under warranty. Bought the Testo 605 so haven't been using it much. Pulled it out today and it's deaded. Won't turn on. Swapped battery, same thing. GOnna take it back again. No problem with the Testo.

Mine died after about a month, still need to trade it in for a new one.

It is completely useless for in duct readings in an attic environment because the prob doesn't insert far enough into the duct to get into the air stream.
In most cases, especially with lined metal ducts, it only gives you the conditions of the boundary layer of air near the walls of the duct.

It is handy for walk around readings, and for getting ambient conditions.

It also isn't really a pocket tool.
It is to long and heavy for a shirt pocket, and because of how it is constructed, it is far less rugged than you would expect something encased in an aluminum tube to be.

Mine died after about a month, still need to trade it in for a new one.

It is completely useless for in duct readings in an attic environment because the prob doesn't insert far enough into the duct to get into the air stream.
In most cases, especially with lined metal ducts, it only gives you the conditions of the boundary layer of air near the walls of the duct.

It is handy for walk around readings, and for getting ambient conditions.

It also isn't really a pocket tool.
It is to long and heavy for a shirt pocket, and because of how it is constructed, it is far less rugged than you would expect something encased in an aluminum tube to be.

How about a longer cap that doubled as a scoop with intake and exhaust openings to pull air across the sensor from further inside the duct? Maybe you could cut a piece of tubing or cpvc as a attachment.

How about a longer cap that doubled as a scoop with intake and exhaust openings to pull air across the sensor from further inside the duct? Maybe you could cut a piece of tubing or cpvc as a attachment.

Or I could just use something with a longer probe, like the Testo 605-H2.